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What is the effect of intensity of incident light on the photoelectric current?

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Knowledge Check

  • As the intensity of incident light increases,

    A
    Photoelectric current increases.
    B
    Photoelectric current decreases.
    C
    Kinetic energy of emitted photoelectrons increases.
    D
    Kinetic energy of emitted photoelectrons decreases.

  • In photoelectric effect,

    A
    electrons are emitted from the metals when light rays (radiations) are reflected from it.
    B
    light of longer wavelength is more effective than light of shorter wavelength.
    C
    light of shorter wavelength is more effective than light of longer wavelength.
    D
    light is not used.

  • In photoelectric effect,

    A
    the emission of electron is the result of elastic collision between the incident photon and the electron.
    B
    absorption of photon is a gradual process.
    C
    the emission of electron is a result of inelastic collision between the photon and the electron.
    D
    at the threshold frequency, the kinetic energy of ejected electrons is maximum.

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